class DeviceConst {
  static const keyPage = "page";
  static const pageSpo2 = "spo2";
  static const pageTime = "time";
  static const pageSleep = "sleep";

  static const keyStartTime = "startTime";
  static const keyEndTime = "endTime";
  static const sleepStartTime = "sleepStartTime";
  static const sleepEndTime = "sleepEndTime";

  static const changed = "changed";
}